High toughness yttrium oxide stabilized tetragonal zirconia material unaffected by sintering and preparation method thereof
A technology of tetragonal zirconia and yttrium oxide, applied in zirconia and other directions, can solve the problems of narrow sintering process parameter range, reduced fracture toughness of 3Y-TZP material, reduced metal ion distribution uniformity, etc., and achieves simple sintering process and sintering temperature. wide range of effects
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Embodiment 1
[0042] With a purity of 99.99% Zr(NO 3 ) 4 ·3H 2 O and Y (NO 3 ) 3 ·6H 2 O is the raw material, in molar ratio Zr(NO 3 ) 4 ·3H 2 O:Y(NO 3 ) 3 ·6H 2 O=0.94:0.06 ingredients, use deionized water as solvent, prepare an aqueous solution with a total concentration of metal ions of 0.2mol / L, stir magnetically for 1-3h until it is clear and transparent, then add additives such as citric acid hexahydrate and molecular weight of 20000 Polyethylene glycol, wherein the amount of citric acid added 160g / L, polyethylene glycol 20g / L, and then magnetically stirred until clear and transparent, thereby preparing the sol.
[0043] The above-prepared sol was atomized into a corundum crucible by a pressure atomization method, the atomization pressure was 0.3 MPa, and the temperature of the corundum crucible was 500°C. After the atomization of the sol was completed, the temperature of the corundum crucible was raised to 900° C. for 1 hour, and then cooled to room temperature to obtain 3...
Embodiment 2
[0049] With a purity of 99.99% Zr(NO 3 ) 4 ·3H 2 O and Y (NO 3 ) 3 ·6H 2 O is the raw material, in molar ratio Zr(NO 3 ) 4 ·3H 2 O:Y(NO 3 ) 3 ·6H 2 O=0.94:0.06 ingredients, use deionized water as solvent, prepare an aqueous solution with a total concentration of metal ions of 0.2mol / L, stir magnetically for 1-3h until it is clear and transparent, then add additives such as citric acid hexahydrate and molecular weight of 20000 Polyethylene glycol, wherein the amount of citric acid added 160g / L, polyethylene glycol 20g / L, and then magnetically stirred until clear and transparent, thereby preparing the sol.
[0050] The above-prepared sol was atomized into a corundum crucible by a pressure atomization method, the atomization pressure was 0.3 MPa, and the temperature of the corundum crucible was 500°C. After the atomization of the sol was completed, the temperature of the corundum crucible was raised to 900° C. for 1 hour, and then cooled to room temperature to obtain 3...
Embodiment 3
[0057] With a purity of 99.99% Zr(NO 3 ) 4 ·3H 2 O and Y (NO 3 ) 3 ·6H 2 O is the raw material, in molar ratio Zr(NO 3 ) 4 ·3H 2 O:Y(NO 3 ) 3 ·6H 2 O=0.94:0.06 ingredients, use deionized water as solvent, prepare an aqueous solution with a total concentration of metal ions of 0.2mol / L, stir magnetically for 1-3h until it is clear and transparent, then add additives such as citric acid hexahydrate and molecular weight of 20000 Polyethylene glycol, wherein the amount of citric acid added 160g / L, polyethylene glycol 20g / L, and then magnetically stirred until clear and transparent, thereby preparing the sol.
[0058] The above-prepared sol was atomized into a corundum crucible by a pressure atomization method, the atomization pressure was 0.3 MPa, and the temperature of the corundum crucible was 500°C. After the atomization of the sol was completed, the temperature of the corundum crucible was raised to 900° C. for 1 hour, and then cooled to room temperature to obtain 3...
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